[Study] Battery Life and best Charge technique

Discussion in 'MacBook Pro' started by Grumps87, Aug 8, 2009.

  1. Grumps87 macrumors member

    Joined:
    Feb 12, 2009
    #1
    I have been reading posts about charge techniques and usage to preserve the battery life but its often inconclusive and comes with different opinion. Even Apple do not have a proper usage/charge guide to maintain battery lifespan.

    Therefore, I have decided to conduct this study and perhaps produce a certain conclusion on what is the best charge technique to maintain the battery life of our Macs.

    Please fill in the following template and a final conclusion will be produced once we've received enough inputs. Use software like Coconut Battery to retrieve the relevant information required by this study.

    MacBook Model (type,year,unibody):

    Charge Cycle:

    Age of your Mac:

    Battery capacity (current-original):

    Health in %:

    Did you calibrate your battery on your first use?:

    Do you calibrate your battery frequently? (daily/weekly/monthly):

    Do you use your MacBook as a (desktop/travel only/mixed?):

    Do you keep them on charge in any of the above usage? (yes/no)

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily)

    Do you think if you're applying any special technique that help you retain your battery life?
     
  2. 11800506 macrumors 65816

    11800506

    Joined:
    Oct 31, 2007
    Location:
    Washington D.C. Area
    #2
    I guess I might as well be one of the first to do this.

    MacBook Model (type,year,unibody): Macbook Pro (Late 2008, Unibody)

    Charge Cycle: 62

    Age of your Mac: 10 months

    Battery capacity (current vs original): 4645 mAh / 4600 mAh

    Health in %: 100%

    Did you calibrate your battery on your first use?: Don't remember

    Do you calibrate your battery frequently? (daily/weekly/monthly): Every couple of weeks

    Do you use your MacBook as a (desktop/travel only/mixed?): Mixed, about 70% as a desktop though

    Do you keep them on charge in any of the above usage? (yes/no) Almost always

    When do you charge your MacBook: (one answer)
    -All the time (meaning I keep it plugged in pretty much always), but when I do use it off of the charger, only when it has dropped to less than 5%

    Do you use your MacBook heavily?: (average hours daily)
    About 4-5 hours a day maybe? Although being the summer, I don't have school so it might be swayed. During the school year, I'd say 2-3 hours a day.
     
  3. darkdream macrumors member

    Joined:
    Jun 25, 2009
    #3
    MacBook Model (type,year,unibody):2009 mid

    Charge Cycle:10

    Age of your Mac:month old

    Battery capacity (current vs original):6642 vs 6500

    Health in %: 100%

    Did you calibrate your battery on your first use?:yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): weekly

    Do you use your MacBook as a (desktop/travel only/mixed?): mixed

    Do you keep them on charge in any of the above usage? yes

    When do you charge your MacBook: (one answer)
    less than 10%

    Do you use your MacBook heavily?: from 7 to 14
    __________________
     
  4. m85476585 macrumors 65816

    Joined:
    Feb 26, 2008
    #4
    It might also help to post the battery manufacturer, found in system profiler->power.
    My theory is that the Sony batteries in multibody MBPs are bad, but I don't know if there are any other brands.

    I think leaving it plugged in all the time is bad for the battery. Mine (a Sony) is at 93% and falling after just 28 cycles. I use it on battery at least 3x a week during the school year, but over the summer it is almost always plugged in. I got this battery in March or April after the first one (also a Sony) went below 80% with around 70 cycles. I don't calibrate much, never more than once a month, but I don't think it does anything for the health of the battery, it just calibrates the time remaining.
     
  5. 11800506 macrumors 65816

    11800506

    Joined:
    Oct 31, 2007
    Location:
    Washington D.C. Area
    #5
    My Unibody's battery manufacturer is SMP. I'm not exactly sure what that means... but I keep it plugged in almost all the time while using the battery about once a week and after 62 cycles, I'm still at 100%.
     
  6. hamish5178 macrumors member

    Joined:
    Jun 11, 2009
    Location:
    Newark, DE
    #6
    MacBook Model (type,year,unibody): 13" MBP

    Charge Cycle: 10

    Age of your Mac: 3 months

    Battery capacity (current-original): 5431-5450

    Health in %: 99%

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): Monthly, or whenever iStat dips below %100.

    Do you use your MacBook as a (desktop/travel only/mixed?): Mixed

    Do you keep them on charge in any of the above usage? (yes/no) Almost always plugged in when using.

    Do you only charge your MacBook when the battery is: (common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time) This

    Do you use your MacBook heavily?: (average hours daily) 2-3 hours per day.


    Manufacturer = DP

    Used coconut battery, I use iStat since the widget is convenient but it doesn't have age bit.
     
  7. rj-300zx macrumors regular

    rj-300zx

    Joined:
    Feb 2, 2009
    #7
    MacBook Model (type,year,unibody): PowerBook G4 12", late 2005

    Charge Cycle: 0

    Age of your Mac: 51 months

    Battery capacity (current-original): 4160-4192

    Health in %: 99%

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): 1/yr

    Do you use your MacBook as a (desktop/travel only/mixed?): Mixed

    Do you keep them on charge in any of the above usage? (yes/no) Yes

    Do you only charge your MacBook when the battery is: (common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time) I do this or if I do run on battery I wait till less than 10%

    Do you use your MacBook heavily?: (average hours daily) 4-14 hours


    I get about 3-6 hours off power depending what im doing.

    Coconut
     
  8. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #8
    How do you have 0 cycles for a 4 year old notebook? did you never ever unplug it or what?
     
  9. rj-300zx macrumors regular

    rj-300zx

    Joined:
    Feb 2, 2009
  10. andrew12090 macrumors member

    Joined:
    Jul 22, 2009
    #10
    MacBook Model (type,year,unibody): mbp 13 Summer 09

    Charge Cycle: 20

    Age of your Mac: 5 weeks

    Battery capacity (current-original):5450, sitting at 5550 right now

    Health in %: 100

    Did you calibrate your battery on your first use?: Yea, first or second

    Do you calibrate your battery frequently? (daily/weekly/monthly): I do about weekly

    Do you use your MacBook as a (desktop/travel only/mixed?): I use it around my house so mixed

    Do you keep them on charge in any of the above usage? (yes/no) I try to plug it in whenever possible

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) two to three hours a day

    Do you think if you're applying any special technique that help you retain your battery life? no
     
  11. atticus18244fsa macrumors 6502

    atticus18244fsa

    Joined:
    Jul 11, 2008
    Location:
    Waterloo, ON
    #11
    MacBook Model (type,year,unibody):
    15" MBP 2.53, June 2009

    Charge Cycle:
    5

    Age of your Mac:
    2 Weeks

    Battery capacity (current-original):
    6658-6500

    Health in %:
    100%

    Did you calibrate your battery on your first use?:
    Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly):

    Will Be Monthly

    Do you use your MacBook as a (desktop/travel only/mixed?):
    Mixed

    Do you keep them on charge in any of the above usage? (yes/no)
    Yes

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily)

    3-4 Hours A Day
     
  12. Corrode macrumors 6502a

    Corrode

    Joined:
    Dec 26, 2008
    Location:
    Calgary, AB
    #12
    MacBook Model (type,year,unibody): 13" MBP Summer 09

    Charge Cycle: 12

    Age of your Mac: 2 months

    Battery capacity (current-original):Current - 5559, Original - 5450

    Health in %: 100

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): No

    Do you use your MacBook as a (desktop/travel only/mixed?): Desktop Mostly

    Do you keep them on charge in any of the above usage? (yes/no) Yes, always.

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) 2-4 hrs.

    Do you think if you're applying any special technique that help you retain your battery life? Only use the battery when I have to, and when I do have to use the battery, plug it back in around 15% left.
     
  13. kelvin805 macrumors newbie

    Joined:
    Dec 10, 2008
    #13
    MacBook Model (type,year,unibody): 15 inch MacBook Pro Late 2008

    Charge Cycle: 114

    Age of your Mac: 8 months

    Battery capacity (current-original): 4594 - 4600

    Health in %: Damn Near 100%

    Did you calibrate your battery on your first use?: Nope

    Do you calibrate your battery frequently? (daily/weekly/monthly): Whenever the battery dies

    Do you use your MacBook as a (desktop/travel only/mixed?): School, so moving quite a bit

    Do you keep them on charge in any of the above usage? (yes/no) Usually I plug when I can, but it's not that often

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible Yes
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) Too much

    Do you think if you're applying any special technique that help you retain your battery life? Just use it, your battery is going to die anyways
     
  14. AppleTecFan macrumors 6502

    AppleTecFan

    Joined:
    Jul 7, 2009
    Location:
    N/A
    #14
    MacBook Model MacBook Pro 2009 unibody

    Charge Cycle 5

    Age 5 Weeks

    Battery capacity (current-original): 5476-5460 (Idk why)

    Health in %: 100

    Did you calibrate your battery on your first use?:no

    Do you calibrate your battery frequently? (daily/weekly/monthly):no

    Do you use your MacBook as a (desktop/travel only/mixed?): mixed

    Do you keep them on charge in any of the above usage? (yes/no) When it is possible

    Do you use your MacBook heavily?: (average hours daily) well it's summer so 8-9 hours of school 3-5
     
  15. hiohokaybye macrumors regular

    Joined:
    Sep 17, 2007
    #15
    MacBook Model (type,year,unibody): Mid 2009 Unibody Macbook Pro

    Charge Cycle:22

    Age of your Mac: 5 Weeks

    Battery capacity (current-original): 6366 / 6500

    Health in %: 97%

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): Daily

    Do you use your MacBook as a (desktop/travel only/mixed?): Mixed

    Do you keep them on charge in any of the above usage? (yes/no) Yes

    Do you only charge your MacBook when the battery is: At 1%

    Do you use your MacBook heavily?: (average hours daily) 5 hours

    Do you think if you're applying any special technique that help you retain your battery life?

    Guess not.
     
  16. andrewpoll macrumors newbie

    Joined:
    Aug 21, 2008
    Location:
    South Africa
    #16
    MacBook Model (type,year,unibody): Macbook Pro Late 2006

    Charge Cycle: 343

    Age of your Mac: 32 months

    Battery capacity (current-original):1023 - 5500

    Health in %: 18%

    Did you calibrate your battery on your first use?: no

    Do you calibrate your battery frequently? (daily/weekly/monthly): yes

    Do you use your MacBook as a (desktop/travel only/mixed?): mixed

    Do you keep them on charge in any of the above usage? (yes/no) yes

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time) less than 50%

    Do you use your MacBook heavily?: (average hours daily) Its one almost all day every day

    Do you think if you're applying any special technique that help you retain your battery life? no
     
  17. 01jamcon macrumors 6502a

    01jamcon

    Joined:
    Jul 24, 2006
    Location:
    London
    #17
    MacBook Model (type,year,unibody): MB mid 2006

    Charge Cycle: 419

    Age of your Mac: 37 months

    Battery capacity (current-original): 5231/5020

    Health in %: 100

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): Hardly ever

    Do you use your MacBook as a (desktop/travel only/mixed?): Mixed

    Do you keep them on charge in any of the above usage? Plugged in whenever possible

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) 3-4 hours per day

    Do you think if you're applying any special technique that help you retain your battery life? No
     
  18. Grumps87 thread starter macrumors member

    Joined:
    Feb 12, 2009
    #18
    We're looking for more inputs. Please continue to participate!
     
  19. Grumps87 thread starter macrumors member

    Joined:
    Feb 12, 2009
    #19
    MacBook Model (type,year,unibody): MacBook Pro, Mid 2009, Unibody

    Charge Cycle: 2

    Age of your Mac: 5 Weeks

    Battery capacity (current-original): 5313 vs 5450

    Health in %: 97%

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): Weekly

    Do you use your MacBook as a (desktop/travel only/mixed?): Mostly Desktop

    Do you keep them on charge in any of the above usage? (yes/no) Yes

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) 6 Hours

    Do you think if you're applying any special technique that help you retain your battery life? No

    Got a feeling that I'm getting a defect battery. Battery health don't look too good.
     
  20. WarriorTi22 Guest

    Joined:
    Jun 24, 2008
    #20
    I have 32 charge cycles in 2 months!!??? Is that ridiculously high? I have read that its better to unplug ur computer and use it than it is to just use it while its plugged in all the time? should i stop running on battery power??
     
  21. WarriorTi22 Guest

    Joined:
    Jun 24, 2008
    #21
    MacBook Model (type,year,unibody): 2009 Unibody MBP 15"

    Charge Cycle:32

    Age of your Mac:2 Months

    Battery capacity (current-original): 6502-6500

    Health in %: 100%

    Did you calibrate your battery on your first use?: Yes

    Do you calibrate your battery frequently? (daily/weekly/monthly): Ive done it like 3 times iThink

    Do you use your MacBook as a (desktop/travel only/mixed?): Mixed

    Do you keep them on charge in any of the above usage? (yes/no) Depends...

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%<<<<<<<<<<<<<<<<
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) 2-4 Hrs a day

    Do you think if you're applying any special technique that help you retain your battery life? Well i usually dont keep it on the charger when im at my desk using it when i easily could....IDK if i should change that?
    __________________
     
  22. Grumps87 thread starter macrumors member

    Joined:
    Feb 12, 2009
    #22
    Hey Warrior, why don't you participate in the survey. It is the exact reason why we're conducting the study. To find out which charge method and best usage practice to prolong our device's battery life.
     
  23. WarriorTi22 Guest

    Joined:
    Jun 24, 2008
    #23
    I just realized that it was stupid that I didnt...
     
  24. Grumps87 thread starter macrumors member

    Joined:
    Feb 12, 2009
    #24
    Opps just realize that you posted it awhile ago.

    Anyway, frequently using your battery will definitely increase your charge cycle as you have to recharge it to the 100% capacity. Twice of 50% -> 100% is equivalent to one charge cycle. Meanwhile keeping your MBP on plug will only limit the use of your battery use.

    However we're not conclusive on which of the above practice is better for your battery life span.
     
  25. MWPULSE macrumors 6502a

    MWPULSE

    Joined:
    Dec 27, 2008
    Location:
    London
    #25
    MacBook Model (type,year,unibody): mid 2008 MBP15" (pre unibody)

    Charge Cycle: 232

    Age of your Mac: 12

    Battery capacity (current-original): 4902-5500

    Health in %: 88%

    Did you calibrate your battery on your first use?: cant remember, i dont think so

    Do you calibrate your battery frequently? (daily/weekly/monthly): try to remember monthly

    Do you use your MacBook as a (desktop/travel only/mixed?): mixed

    Do you keep them on charge in any of the above usage? (yes/no) yes

    Do you only charge your MacBook when the battery is: (most common practice)
    -less than 70%
    -less than 50%
    -less than 10%
    -When it is possible
    -All the time (plugged at all time)

    Do you use your MacBook heavily?: (average hours daily) 4-10

    Do you think if you're applying any special technique that help you retain your battery life? nope not really, i used to not pay attention at all, i do get the impression my battery is a bit poorly, looking at the health of the other posters here though..

    PTP
     

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